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https://issues.apache.org/jira/browse/HIVE-1131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849624#action_12849624
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Ashish Thusoo commented on HIVE-1131:
-------------------------------------
Comment 3 from Raghu and comment S2-S4 from Zheng are not yet incorporated.
The new patch overhauls things a bit to support Partition level lineage and
does this in a post execute hook. It gets rid of the visits and the iterator
classes. Will fix the other comments in the patch with the test cases.
> Add column lineage information to the pre execution hooks
> ---------------------------------------------------------
>
> Key: HIVE-1131
> URL: https://issues.apache.org/jira/browse/HIVE-1131
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Ashish Thusoo
> Assignee: Ashish Thusoo
> Attachments: HIVE-1131.patch, HIVE-1131_2.patch
>
>
> We need a mechanism to pass the lineage information of the various columns of
> a table to a pre execution hook so that applications can use that for:
> - auditing
> - dependency checking
> and many other applications.
> The proposal is to expose this through a bunch of classes to the pre
> execution hook interface to the clients and put in the necessary
> transformation logic in the optimizer to generate this information.
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